To compare energy prices in Perth, you can use online comparison tools like Energy Made Easy or visit the Energy Ombudsman’s website. These platforms allow you to input your usage details and compare different retailers and plans available in your area. Additionally, consider checking for any government assistance programs that might be applicable to you. Remember, it's a good idea to read the terms and conditions carefully before switching providers. For more personalised advice, you may also want to contact the relevant energy regulator or a licensed energy broker.